jea48

Responses from jea48

Voltage conversion from 220V to 110V.
You may want to check with the manufacture of the Amps to see if they are dual voltage via way of a switch or internal tap change.If they are not,ask them about using 220\230 volt USA power.If the Amps are 220v 50 cycle only, I would ask if 60 cyc... 
Can a rebias alter the sound of the tubes?
In your original question you said said you sent your preamp in to SFI with tubes of your choice and asked SFI to reset the bias for your tubes.Just because there are not adjustable pots the bias of tubes can be changed by changing the fixed resis... 
Can a rebias alter the sound of the tubes?
YES!Old saying,[if it isn`t broken don`t fix it]. 
5U4 vs 5V4
Yes,tube pinouts are the same. The 5U4 has higher [MAXIMUM RATINGS].The 5U4 will cost more to buy, than the5V4.The 5U4,5U4B,5U4GB,Email CARY for there rec. 
dac or upgrade player
What are you looking for that your Arcam is lacking?I have the ARCAM ALPHA 9.Does the CD62 have a detatchable power cord.If so have you replaced it. The ALPHA 9 cord was junk! I replaced it with an Audioquest power cord, with an AQ RF filter. I fo... 
Pre-Amp Problem Opinions Please
Just a note you can use a regular patch cord from your transport to your DAC, it just won`t have the Bandwith as the Digitl cable.It probably would still sound better than the glass you were using.My first reply to your problem I said [Mode switch... 
Pre-Amp Problem Opinions Please
I have An LS3, when I first turn on the unit the Mute light is dim lit for about 3 sec then goes bright.Does your unit do that? It sure sounds like your not patched in correctly.It sounds like cross talk within the unit,you know,if your not using ... 
Power Cord Burn-In
Just turn on your cdp.Current will pass thru your power transformer for the cdp power supply.Your not burnning in an interconnect.